- Lewis, Roger T., 1942- (3)
- Knowles, Ian W., 1946- (2)
- Atkinson, Frederick V. (1)
- Everitt, William Norrie, 1924- (1)
- International Conference on Differential Equations (1)
- International Conference on Spectral Theory of Differential Operators (1)
- Science and Engineering Research Council (Great Britain). Mathematics Committee (1)
- Symposium on Ordinary Differential Equations and Operators (1)